Stens Silver Streak Hi-Lift blades are an excellent choice for commercial or walk behind mowers. These toothed blades are 25% thicker and provide 40% higher lift than most other toothed blades on the market today. These blades are great for normal lawn cutting or cutting in the fall. Their special design throws debris up into the deck for multiple clippings. The clippings will be a finer and the lawn will have a manicured look. The smaller clipping will also decompose quicker as a long term benefit for an overall healthy lawn. These heavier duty blades also have more sharpening area that give longevity to the blade. That means less down time and more productivity.